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Practical docs for Mundifex tools, file formats, account limits, APIs, and the common workflows that connect lexicons, sound changes, geology, and maps.
- Open Lexicon Explorer and upload a VulgarLang export or compatible JSON files.
- Search, filter, seed, or export the normalized JSON snapshot.
- Use Extract Phonology to prepare data for the Simple Sound Change Generator.
- Extract phonology from a lexicon, or load a saved phonology JSON file.
- Stack change passes in the Simple or Advanced generator.
- Open the generated rules in the Sound Change Applier and apply them to a word list.
- Open Simple Toponymy Generator and upload a compatible lexicon.
- Choose a terrain preset, then select translated words for each first-element and second-element pool.
- Generate compounds, correct final names, and export generated toponymy JSON.
- Use Globe Viewer or Globe Timeline for browser-only map inspection.
- Use WorldEngine Builder for generated worlds when your account has access.
- Download ZIP artifacts when your plan allows artifact downloads.
Free Linguistics Tools
Build agglutinative and concatenative place-name systems from lexicon words. Start from Koeppen, CK3-style, or Holdridge terrain presets, search translations for likely first and second elements, select the words that belong in each category, generate compounds, correct the final names, and export config or generated-name JSON.
Advanced Linguistics Tools
Geology And Cartography
Build a hosted world hub around public maps, lexicons, assets, article pages, and project links while keeping deeper world-bible knowledge private. Creator accounts can manage one Featured World; Studio/API and manual internal accounts are intended for larger or custom-domain setups.
Lexicons
Lexicon Explorer and Studio accept VulgarLang exports or compatiblelanguages*.json andwords*.json files. Explorer can export normalized JSON or one filtered column at a time.
Phonology JSON
Produced by Phonology Extractor. Use it to seed the Simple Sound Change Generator by file upload or URL parameter.
Phonotactics JSON
Produced by Phonotactics Extractor. Use it with the Advanced Sound Change Generator and keep it with your project notes for repeatable analysis.
SCA Workspaces
Generators export SCA-compatible workspaces that can be loaded by the Sound Change Applier. The applier can also save and load Mundifex JSON workspaces.
Sound Change API
Stateless GET and POST endpoints for SCA²-style rules. Send rules plus words or lexicon; optional params include categories, rewrites, output format, rewrite-on-output, and intermediate stages.
Read API referenceMineral Formation API
GET and POST endpoints for geologic timelines, presets, or domain-aware text. Returns ranked resources, signals, notes, and accessibility guidance as JSON.
Read API referenceTool-to-tool links use URL parameters where practical. Very large generated artifacts should be downloaded as files instead of shared as URLs.
Free
No-login tools, 3 saved lexicons at 500 words each, 3 saved 512x512 WorldEngine worlds, 1 active job.
Plus
25 saved lexicons, 5,000 words per lexicon, phonotactics and advanced sound changes, 5 saved worlds, 1 active job, 30-day artifacts.
Creator
100 saved lexicons, 25,000 words per lexicon, batch-friendly workflows, 20 saved worlds, 3 active jobs, 90-day artifacts, and one Featured World hub.
Studio/API
Coming later for higher-volume automation, teams, commercial workflows, and stronger API limits.
Inactive, unpaid, canceled, or incomplete paid subscriptions fall back to Free limits until billing is active again.
Imports fail
Check that JSON files are valid and that matching language and word exports are uploaded together. For Studio saves, trim imports to your plan's word limit.
A generator has no rules
The input inventory may be too small or missing pronunciations. Add more pronounced words, extract again, and try fewer rules per change pass.
WorldEngine is unavailable
Sign in first. If the builder is still hidden or blocked, your account may not have rollout access yet, or you may have hit active-job or saved-world limits.
Billing looks stale
Use Billing Help to refresh your plan state or open the Stripe portal. If support is needed, include your account email and the plan you expected to see.
When emailing support, include the tool name, what you tried, the file type involved, the exact error text, and whether you were signed in. For billing issues, include the account email and whether the issue is checkout, portal access, renewal, or limits.